linux-kernel - Re: [PATCH 1/3] crypto: sm4 - create SM4 library based on sm4 generic code

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Message-ID: <d8e6305a-b535-5952-aa2a-275ca18c1bd9@linux.alibaba.com>
Date:   Mon, 14 Mar 2022 10:32:25 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Eric Biggers <ebiggers@...nel.org>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Gilad Ben-Yossef <gilad@...yossef.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        "Markku-Juhani O . Saarinen" <mjos@....fi>,
        Jussi Kivilinna <jussi.kivilinna@....fi>,
        X86 ML <x86@...nel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] crypto: sm4 - create SM4 library based on sm4 generic
 code

Hi Jason,

On 3/12/22 7:03 AM, Jason A. Donenfeld wrote:
> Hi Tianjia,
> 
> On Wed, Mar 2, 2022 at 3:23 PM Eric Biggers <ebiggers@...nel.org> wrote:
>>
>> On Wed, Mar 02, 2022 at 01:26:13AM +0100, Jason A. Donenfeld wrote:
>>> On Wed, Mar 2, 2022 at 1:24 AM Herbert Xu <herbert@...dor.apana.org.au> wrote:
>>>>
>>>> On Tue, Mar 01, 2022 at 11:34:28AM +0100, Jason A. Donenfeld wrote:
>>>>>>   lib/crypto/Kconfig   |   3 +
>>>>>>   lib/crypto/Makefile  |   3 +
>>>>>>   lib/crypto/sm4.c     | 184 +++++++++++++++++++++++++++++++++++++++++++
>>>>>
>>>>> If this is only used by the crypto API, it does not belong in
>>>>> lib/crypto.
>>>>
>>>> Nope there is no such rule.  lib/crypto is fine if you're adding
>>>> code that is shared between crypto and arch/*/crypto.
>>>
>>> The sprawling madness continues then... Noted.
>>
>> I think it would make more sense for this code to be in crypto/, for the reason
>> that Jason gave.
> 
> Were you planning on submitting a patch for this?
> 
> Thanks,
> Jason

I agree with Herbert that this is not necessary and the community is 
currently not in agreement on this point, and I'd be happy to do the 
work if there's a more reasonable reason.

Thanks so much for your suggestion.

Best regards,
Tianjia